Pneumatic thread holder and tension device for weft-replenishing looms



Mw. 5, 1929e o, V, PAYNE-jf PNEUMATIC THREAD HOLDER AND TENSION DEVICE FQR vml RNPLENISHING Loo Filed Deo. 28, 1927 Patented Mai'. 5i,V 192g,

filaire igeasssjf r ossea v. rar-nn, or Weiterlesen, vivresse,capiiseries, assreneit re 'onanieren a mmv/'Lne Leoni Woansgos 'vroaeiisrnn eoareaafrienor MASSACHUSETTS.

PNEUMATEC THREAD HGLDER AND Tension envien ron vv'iirnnartniirsiirne Looms.

Application filed December 28, 1927. Serial No. 243,055.

y This invention relates to a device for holding the yveft ends of bobbins or weft carriers which are inserted in the magazine of a weft replenishing loom.

lt is customary to hold suoli weft ends by Winding them about a fixed part of the loom or magazine, but is found that threads thus rigidly held are frequently biolren, due

to the unyielding attachment of the threads.

of air directed through the tubular end holder. i

My invention further relates to arrangements and combinationsof parts which will be hereinafter described and inore'particulai'ly pointed out in the appended claims.

A preferred form` of the invention is shown in the drawings, in Which VEig. l vis a front elevation of parts of a weft carrier magazine, with my improved end holder attached thereto and shown in section, and lfigz 2 is a sectional plan 5 shown in Fig. l. y f

Referring tov the drawings, l have indicated parts of a weft carrier magazine coinprising end plates l0` and 1l having ribs or partitions 12 and 13 which define vertically disposed compartments to receive the butts and'tips of weft carriers B, all in the usual ymanner and as well known in the art. Vertically extending slots le are provided in the end plate 11 through which the vveft'ends l/V may be drawn outvvardto be secured in the weft endholder. n.

My improved end holder and tensioning device comprises a tubular member mounted in a bracket 21 secured to the end plate 11. The tubular member 20 has an offset portion 22 which is curved toward the view of the parts magazine,and is preferably provided with a belleliaped mouth 23.

zi pipe 2o is held in a projection 2b at the side of the member 20, the pipe 25 beingA substantially aligned With the straightlovver portion of the tubular Anieinber and preferably projecting partially Within said tubular member as indicated in Fig. l. Air under pressure from any suitable supply is forced through the pipe 25 into the member 20, creating a strong draft of air toward the open lower end of the member 20, and at the saine time causing an induced flow of airthrougli the curved entrance portion 22.

When placing fresh weft carriers B in the magazine, it isy merely necessary to draw the ends Vf out through the slots le and present the ends at the mouth 28 of the tubular member 20. l rlhe strong current of air will then draw the ends into the meinber`20 and will exert a sufficient tension thereon for the purpose of weft replenishment, While at the saine time the weft ends Will be so held that they can readily yield slightly to relieve the sudden and exeessivestrain sometimes arising at the moment of transfer.

`lt will also be noted that as soon as the weft end is severed from the vveft carrier by the thread cutter after the shuttle is picked, the draft of air will act to draw the severed weft end into the tubular member and to eject it at the lower end thereof,

where it may be received in any suitable receptacle.

Haifiiig thus described my invention and the advantagesthereof, I do not Wish to' be liinitedto Vthe details herein disclosed otherwise .thanV as setv forth in the claims, but What l claim is Y l. ln a vveft replenishing loom, a magazine adapted to receive a plurality ofv weft carriers, a thread holder and tension device associated with said magazine and compris ing an end holding member, and pneumatic means to draw within said member weft ends from said weft carriers when said carriers are placed in said magazine and the ends are presented to said member, said pneumatic nieanstheiieafter exerting continuous yielding tension on said weft ends so long as said weft carriers' remain in said magazine and during transfer thereof to the running shuttle.

2. The combination in a loom as set forth thread holding member open from end to end and in which said pneumatic means injects a blast of air into Said tubularl member in a direction away from said magazine.

5. rlhe combination in a loom as set forth in claim l, in which the thread holder and tension device comprises a tubular thread holding,` member haring an offset thread receiving portion directed toward said magazine and having' an air outlet portion and in which said pneumatic menne` directe a blast or' air throuh said outlet )ortion awa f' from ,said magazine..V t

ln testimony Wherooif l have hereunto ai"- ixed my signature.

OSCAR Y. AYNE. 

